Time to update your Twitter photos! No. 2 social network Twitter will roll out its bigger and bolder profiles to all users on Dec. 12.

As you can see in the photo above, the new profiles include a large header photo behind your main picture. This allows you to personalize your page more and make it more colorful. I’ve got a kick for nature photography, so my page is decked out with scenic pictures.

The company announced the rollout in a short blog post:

A few months ago, we introduced new Twitter profiles so that you could make your profile beautiful and display your style on your profile page. By uploading a header photo on twitter.com or our mobile apps on iPhone, iPad or Android, you can make your profile more uniquely yours. We’ve seen a lot of cool takes on these new profiles –– including shots from Mars, silly themes, and brands and celebrities expressing themselves in clever ways.

On December 12, we’re rolling this out to all users: you’ll automatically get this new version of the profile on twitter.com. If you don’t upload a header photo by then, you (and everyone else) will only see a default grey image on your page. That’s not fun! To get inspired about what you can do, check out this video to see how to make your profile a little more “you”, less generic. Have fun out there.

Check out the video below for more.